Weather Records on 17 October 1921

64 weather records were set or tied worldwide on 17 October 1921. Highest significance: Milan, IT.

Key Facts for 17 October 1921

On 17 October 1921, 64 weather records were set or tied at long-record stations worldwide.
40 were record highs and 4 were record lows, counting maximum and minimum temperature.
By timescale, 0 were all-time records, 0 monthly and 64 daily.
Milan set a daily record high maximum temperature of 21.8 C (71.2 F) on 17 October 1921.
Across 162 earlier years (1793 to 2025) the same calendar date averaged 442 records.

Record Map

64 stations

64 station records on 17 October 1921 are marked on the map, coloured by record type. Dot size shows the significance score. Made with Natural Earth.

Weather records on 17 October 1921: highest significance records shown on the map
Station	Country	Type	Value	Significance
Milan	Italy	Record high maximum temperature	21.8 C (71.2 F)	40 of 100 (Notable)
Uccle	Belgium	Record high maximum temperature	24.0 C (75.2 F)	33 of 100 (Routine)
Oxford	United Kingdom	Record high maximum temperature	24.0 C (75.2 F)	30 of 100 (Routine)
Gilbert River Post Office	Australia	Record daily precipitation	36.3 mm (1.4 in)	26 of 100 (Routine)
Cet Central England	United Kingdom	Record high maximum temperature	21.9 C (71.4 F)	26 of 100 (Routine)
Croydon Township	Australia	Record daily precipitation	25.7 mm (1.0 in)	23 of 100 (Routine)
Sheffield	United Kingdom	Record high maximum temperature	21.1 C (70.0 F)	23 of 100 (Routine)
Powell Creek	Australia	Record daily precipitation	13.5 mm (0.5 in)	20 of 100 (Routine)
Greenethorpe (Iandra)	Australia	Record daily precipitation	22.1 mm (0.9 in)	20 of 100 (Routine)
Nordby (Fano)	Denmark	Record high maximum temperature	15.8 C (60.4 F)	20 of 100 (Routine)
Karumba Pilot Station	Australia	Record daily precipitation	1.3 mm (0.05 in)	19 of 100 (Routine)
Hughenden Post Office	Australia	Record daily precipitation	32.0 mm (1.3 in)	19 of 100 (Routine)
Normanton Post Office	Australia	Record daily precipitation	1.3 mm (0.05 in)	18 of 100 (Routine)
Wrixum/Fohr	Germany	Record high maximum temperature	17.9 C (64.2 F)	18 of 100 (Routine)
Sonnblick	Austria	Record high minimum temperature	2.1 C (35.8 F)	17 of 100 (Routine)
Magdeburg	Germany	Record high maximum temperature	21.8 C (71.2 F)	17 of 100 (Routine)
Pointe Au Pere	Canada	Record low minimum temperature	-4.4 C (24.1 F)	16 of 100 (Routine)
Karlsruhe	Germany	Record high maximum temperature	21.4 C (70.5 F)	16 of 100 (Routine)
Durham	United Kingdom	Record high maximum temperature	18.3 C (64.9 F)	16 of 100 (Routine)
Needles	United States	Record high maximum temperature	35.6 C (96.1 F)	16 of 100 (Routine)
Port Elliot Caravan Park	Australia	Record daily precipitation	6.9 mm (0.27 in)	15 of 100 (Routine)
Trunkey Creek (Trunkey (Black	Australia	Record daily precipitation	17.8 mm (0.7 in)	15 of 100 (Routine)
Taralga Post Office	Australia	Record daily precipitation	14.5 mm (0.6 in)	15 of 100 (Routine)
Hay (Toogimbie)	Australia	Record daily precipitation	6.4 mm (0.25 in)	15 of 100 (Routine)
Muenster	Germany	Record high maximum temperature	21.5 C (70.7 F)	15 of 100 (Routine)
Gardiner	United States	Record low maximum temperature	6.7 C (44.1 F)	15 of 100 (Routine)
Carrathool (Uardry)	Australia	Record daily precipitation	5.6 mm (0.22 in)	13 of 100 (Routine)
Dohne (Sar)	South Africa	Record daily precipitation	15.5 mm (0.6 in)	13 of 100 (Routine)
Durban-Botanical Gardens	South Africa	Record daily precipitation	12.5 mm (0.5 in)	13 of 100 (Routine)
Nordby (Fano)	Denmark	Record high minimum temperature	11.8 C (53.2 F)	12 of 100 (Routine)
Lubeck-Werft	Germany	Record high maximum temperature	20.0 C (68.0 F)	12 of 100 (Routine)
Jonkoping	Sweden	Record high maximum temperature	15.5 C (59.9 F)	12 of 100 (Routine)
Stornoway Airport	United Kingdom	Record high maximum temperature	15.0 C (59.0 F)	12 of 100 (Routine)
Durham	United Kingdom	Record high minimum temperature	11.7 C (53.1 F)	12 of 100 (Routine)
Sonnblick	Austria	Record high maximum temperature	4.2 C (39.6 F)	11 of 100 (Routine)
Freiburg	Germany	Record high maximum temperature	20.5 C (68.9 F)	11 of 100 (Routine)
Arnsberg	Germany	Record high maximum temperature	21.2 C (70.2 F)	11 of 100 (Routine)
Waren	Germany	Record high maximum temperature	20.1 C (68.2 F)	11 of 100 (Routine)
Weissenburg	Germany	Record high maximum temperature	17.2 C (63.0 F)	11 of 100 (Routine)
Arhangelsk	Russia	Record daily precipitation	6.6 mm (0.26 in)	11 of 100 (Routine)
Saentis	Switzerland	Record high minimum temperature	4.8 C (40.6 F)	11 of 100 (Routine)
Sheffield	United Kingdom	Record high minimum temperature	12.8 C (55.0 F)	11 of 100 (Routine)
Tranebjerg	Denmark	Record high minimum temperature	11.4 C (52.5 F)	10 of 100 (Routine)
Galway	Ireland	Record high maximum temperature	18.3 C (64.9 F)	10 of 100 (Routine)
Schwerin	Germany	Record high maximum temperature	19.4 C (66.9 F)	10 of 100 (Routine)
Kirchdorf/Poel	Germany	Record high maximum temperature	19.5 C (67.1 F)	10 of 100 (Routine)
Georgetown Post Office	Australia	Record daily precipitation	8.4 mm (0.33 in)	8 of 100 (Routine)
Berlin-Dahlem	Germany	Record high maximum temperature	21.1 C (70.0 F)	8 of 100 (Routine)
Cottbus	Germany	Record high maximum temperature	21.6 C (70.9 F)	8 of 100 (Routine)
Heinersreuth-Vollhof	Germany	Record high maximum temperature	18.8 C (65.8 F)	8 of 100 (Routine)
Plauen	Germany	Record high maximum temperature	19.2 C (66.6 F)	8 of 100 (Routine)
Kentani (Bos)	South Africa	Record daily precipitation	20.1 mm (0.8 in)	8 of 100 (Routine)
Cumberland Station	Australia	Record daily precipitation	16.3 mm (0.6 in)	7 of 100 (Routine)
Hillview (Ballandry)	Australia	Record daily precipitation	8.1 mm (0.32 in)	7 of 100 (Routine)
Altastenberg	Germany	Record high maximum temperature	16.6 C (61.9 F)	7 of 100 (Routine)
Woods Point	Australia	Record daily precipitation	21.6 mm (0.9 in)	6 of 100 (Routine)
Adrian 2 NNE	United States	Record high minimum temperature	12.8 C (55.0 F)	6 of 100 (Routine)
Skara 1	Sweden	Record high maximum temperature	15.0 C (59.0 F)	5 of 100 (Routine)
Vestervig	Denmark	Record high minimum temperature	12.0 C (53.6 F)	4 of 100 (Routine)
Tranebjerg	Denmark	Record high maximum temperature	16.2 C (61.2 F)	4 of 100 (Routine)

Counts by Type and Timescale

64 records

Records set or tied on 17 October 1921 by type: Highest daily maximum 31, Lowest daily maximum 3, Highest daily minimum 9, Lowest daily minimum 1, Heaviest daily rainfall 20.

Records on 17 October 1921 by type
Record type	Records
Highest daily maximum	31
Lowest daily maximum	3
Highest daily minimum	9
Lowest daily minimum	1
Heaviest daily rainfall	20
Heaviest daily snowfall	0
Deepest snow cover	0

Records on 17 October 1921 by timescale: all-time 0, monthly 0, daily 64.

How Much Records Were Beaten By

58 broken records

Margins by which the 58 broken records beat the old ones, in degrees Celsius for temperature and millimetres for precipitation and snow; the largest margin was 31.7. Ties are not counted.

Top 20 by Significance

17 October 1921

Top 20 records on 17 October 1921 by significance
Date	Station	Record	Value	Beat old record by	Old record stood	Significance
17 October 1921	Milan, IT	daily high max	21.8 C (71.2 F)	0.2 C (0.4 F)	124 years	40 of 100 (Notable)
17 October 1921	Uccle, BE	daily high max	24.0 C (75.2 F)	4.3 C (7.7 F)	44 years	33 of 100 (Routine)
17 October 1921	Oxford, GB	daily high max	24.0 C (75.2 F)	4.7 C (8.5 F)	16 years	30 of 100 (Routine)
17 October 1921	Gilbert River Post Office, AU	daily rain	36.3 mm (1.4 in)	31.7 mm (1.2 in)	6 years	26 of 100 (Routine)
17 October 1921	Cet Central England, GB	daily high max	21.9 C (71.4 F)	4.6 C (8.3 F)	16 years	26 of 100 (Routine)
17 October 1921	Croydon Township, AU	daily rain	25.7 mm (1.0 in)	20.4 mm (0.8 in)	3 years	23 of 100 (Routine)
17 October 1921	Sheffield, GB	daily high max	21.1 C (70.0 F)	3.8 C (6.8 F)	23 years	23 of 100 (Routine)
17 October 1921	Powell Creek, AU	daily rain	13.5 mm (0.5 in)	9.4 mm (0.37 in)	26 years	20 of 100 (Routine)
17 October 1921	Greenethorpe (Iandra), AU	daily rain	22.1 mm (0.9 in)	17.3 mm (0.7 in)	16 years	20 of 100 (Routine)
17 October 1921	Nordby (Fano), DK	daily high max	15.8 C (60.4 F)	0.6 C (1.1 F)	46 years	20 of 100 (Routine)
17 October 1921	Karumba Pilot Station, AU	daily rain	1.3 mm (0.05 in)	1.3 mm (0.05 in)	47 years	19 of 100 (Routine)
17 October 1921	Hughenden Post Office, AU	daily rain	32.0 mm (1.3 in)	11.7 mm (0.5 in)	12 years	19 of 100 (Routine)
17 October 1921	Normanton Post Office, AU	daily rain	1.3 mm (0.05 in)	1.3 mm (0.05 in)	44 years	18 of 100 (Routine)
17 October 1921	Wrixum/Fohr, DE	daily high max	17.9 C (64.2 F)	2.8 C (5.0 F)	20 years	18 of 100 (Routine)
17 October 1921	Sonnblick, AT	daily high min	2.1 C (35.8 F)	3.1 C (5.6 F)	29 years	17 of 100 (Routine)
17 October 1921	Magdeburg, DE	daily high max	21.8 C (71.2 F)	2.8 C (5.0 F)	23 years	17 of 100 (Routine)
17 October 1921	Pointe Au Pere, CA	daily low min	-4.4 C (24.1 F)	0.5 C (0.9 F)	39 years	16 of 100 (Routine)
17 October 1921	Karlsruhe, DE	daily high max	21.4 C (70.5 F)	2.4 C (4.3 F)	23 years	16 of 100 (Routine)
17 October 1921	Durham, GB	daily high max	18.3 C (64.9 F)	1.6 C (2.9 F)	23 years	16 of 100 (Routine)
17 October 1921	Needles, US	daily high max	35.6 C (96.1 F)	2.3 C (4.1 F)	29 years	16 of 100 (Routine)

Significance is a score from 0 to 100 combining margin, the age of the old record and the length of the station's record. How it is computed.

The Same Date in Other Years

1793 to 1921

Records set or tied on this calendar date in each year from 1793 to 1921. 1921 had 64 records.

Counts for years before the ledger starts come from the same station rules.

Records on 10-17 in each year
Year	Records
1793	1
1796	2
1808	2
1810	1
1811	1
1817	1
1820	1
1830	1
1836	1
1844	1
1845	1
1868	1
1869	2
1870	1
1872	1
1874	1
1875	1
1876	3
1877	1
1878	1
1879	7
1881	1
1882	1
1883	1
1884	2
1885	2
1886	1
1889	1
1890	3
1891	2
1892	6
1893	5
1894	2
1895	1
1897	3
1898	6
1899	3
1900	3
1901	3
1902	4
1903	9
1904	17
1905	12
1906	3
1907	16
1908	46
1909	18
1910	13
1911	24
1912	12
1913	26
1914	72
1915	7
1916	81
1917	29
1918	20
1919	34
1920	82
1921	64
1922	60
1923	149
1924	81
1925	324
1926	153
1927	163
1928	530
1929	119
1930	441
1931	431
1932	345
1933	190
1934	262
1935	337
1936	338
1937	865
1938	710
1939	424
1940	580
1941	194
1942	349
1943	1,173
1944	415
1945	289
1946	437
1947	744
1948	724
1949	442
1950	809
1951	274
1952	474
1953	463
1954	579
1955	562
1956	353
1957	245
1958	415
1959	403
1960	432
1961	525
1962	350
1963	513
1964	492
1965	920
1966	551
1967	576
1968	929
1969	714
1970	815
1971	1,053
1972	866
1973	542
1974	1,055
1975	605
1976	1,381
1977	1,060
1978	583
1979	468
1980	1,366
1981	555
1982	575
1983	526
1984	1,551
1985	585
1986	354
1987	828
1988	827
1989	1,163
1990	1,109
1991	1,352
1992	1,384
1993	1,001
1994	1,306
1995	1,076
1996	987
1997	1,114
1998	1,455
1999	815
2000	461
2001	878
2002	992
2003	764
2004	935
2005	643
2006	1,506
2007	690
2008	467
2009	1,606
2010	625
2011	734
2012	550
2013	516
2014	530
2015	843
2016	1,559
2017	743
2018	1,163
2019	504
2020	889
2021	294
2022	964
2023	544
2024	994
2025	363

Download the Data

Data for records on 1921-10-17: CSV or JSON. Field meanings are on the data page.

Sources: Source: NOAA National Centers for Environmental Information, Global Historical Climatology Network Daily (GHCN-Daily). Records are computed by World Extreme Weather Monitor and are not official NOAA products. (US Government open data (NOAA NCEI)) Made with Natural Earth. Public domain map data. Borders are Natural Earth's de facto depiction. Data as of 2026-10-17 (17 October 2026). Records are computed by this site and are not official.

Data as of 2026-10-15. Last revised 15 October 2026 (2026-10-15).

Margin	Records
0 to 5	52
5 to 10	1
10 to 15	2
15 to 20	1
20 to 25	1
25 to 30	0
30 to 35	1